9868117919 has 4 divisors (see below), whose sum is σ = 10765219560. Its totient is φ = 8971016280.

The previous prime is 9868117879. The next prime is 9868117927. The reversal of 9868117919 is 9197118689.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 9868117919 - 2⁸ = 9868117663 is a prime.

It is a super-2 number, since 2×9868117919² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9868117019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 448550804 + ... + 448550825.

It is an arithmetic number, because the mean of its divisors is an integer number (2691304890).

Almost surely, 2^9868117919 is an apocalyptic number.

9868117919 is a deficient number, since it is larger than the sum of its proper divisors (897101641).

9868117919 is a wasteful number, since it uses less digits than its factorization.

9868117919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 897101640.

The product of its digits is 1959552, while the sum is 59.

The square root of 9868117919 is about 99338.4010290079. The cubic root of 9868117919 is about 2144.9217025591.

The spelling of 9868117919 in words is "nine billion, eight hundred sixty-eight million, one hundred seventeen thousand, nine hundred nineteen".